Radiocondenser



' Dec. 14,

A. BOEDEKER ET AL RADIOCONDENSER INVENTORY Dec. 14 1926. 1,610,417

A. BOEDEKER ET AL RADIOCONDENSER Filed March 7, 1925 2 Sheets-Sheet 2ANTHONY BOEDEKER, OF CINCINN- TI,

OHIO, ASSIGNORS TO GRANDTOIIE 3.4123316 Ci COREPQRATION OF OHIO.

AND JEEEESE n all, f) CINCINNATI, OHIO, A

nnnrooonnnnsnni Application. filed March 7, 1925.

This condenser is particularly applicable and useful in connection *ithradio apparatus, although it may be used as a condenser in connectionwith any other apparatus or device, when found. practicable for suchuse.

our invention relates to a radio conoenser, particularly of the variabletype and has for its purpose the same functioning as the {261% eral typeof radio variable condensers such as known to the trade or in the art.

The main feature of our condenser is its straight line relationalfunctioning and would be better known to the trade as a radio variablestraight line condenser, from the fact that the two opposite unitspositive and negative sections of blade or vanes pass into correlationwith each other (or vice vers in a straight line without variation ofposition other than inward or outward direction, and thus presenting aminimum or maximum plate surface on each opposite unit as the case mayrequire.

The advantage of the straight line con denser of our particulardescription, over the generally used condenser of today, is that thereis no repetition of reception caused by the adjustment of the condenseras is found in the condenser ot the rotatable type. The generaladjusting control of our condenser may be along; the lines of any wellknown mechanical construction such as is used for moving mechanicalunits in a fixed directional straight line, or in an inward or outwardstraight line, and yet holding; one unit in correlation with the other,in a fixed or adjustable relation.

In our condenser a pair of units are employed as before set forth, eachunit formed of spaced blades, the blades ot one unit adapted to enterbetween the blades or". the opposite unit, to a greater or less degreeand adapted to move in straight lines pa"- allel to the blades; one ofthe units may no stationary and the other movable or they may both bemovable toward each other as is found best in practise and under thecircumstances.

The various tteatures and advantages or" our invention will readilybecome apparent from a perusal of the following specification andclaims.

Serial No, 13.770.

for mi n the adjustable feature in light dotted l nes,

Fig. 3, is an end view of the condenser,

Fig. 4, a side elevation, with parts broken away to illustrateconstruction our condenser, showing the same with a double ustment,

Fig. 5, is a view in elevation of one end of the condenser shown in Fig.at, and

Fig. 6, is a view in elevation of the opposite end of the condensershown in Fig". t.

Our new condenser is made up of a base 1, having at i s sides, theguides 2, into which is mounted the slide 3, 'arrying' the supports 4.

Instead of using a base as 1, the condenser may be placed into anyposition, it may be placed vertically or at an angle and supported insuch manner, or it may be suspended as occasion and circumstances mavrequire. V

Mounted at the top, in the supports 1,

a shaft or pin 5 and at the bottom we provide the shaft or pin 6. Thesepins carry the blades or vanes 7 suitably spaced by the spacers orseparators 8, and mounted on the shafts or pins 5 and 6. This describesone unit or" the condenser. This unit is adjustable back and forth bythe adjusting lever 9 which is pivotally mounted on the pin 10 supportedin the base 1. At the point 12, we pivotally mount one end of a link 13,the other end of which is pivotally mounted on the pin 6. As the lever 9is drawn back and forth, the blades 7 are drawn in and out ofcorrelation with the blades 1%, which are part of the opposite unit.This unit composed of said blades 14, which are sup ported on the pinsand 16, mounted in the stationary supports 17, of the base 1. Spacers orseparators 18 suitably space the blades 1d to work in correlation withthe blades 7 and the separators 18 are on the pins or shafts 15 and 16.

A terminal 19 is provided by the nut connection on the pin 15, to supplycurrent to one unit, the other terminal 20 formed by the nut connectionon the pin 5 imparts current to the blades 7 of the opposite unit.

In Figs. l, 5, and (i, we show the double adjustment in which case bothunits are adjustable. This adjustment is accomplished as'follows: Thesupports 21 are car *ied on a slide 22 which is mounted in the base 1,in the present instance having guides 2. In order to adjust the unitformed 3y the blades A, we provide the lever 23 mounted on pin 24:,secured in base 1. At a point 25 we mount one end of an arm 26, theother end of which is pivotally mounted in the support 21; by drawingback and forth on the handle or lever 28, the blades 14 can be adjustedback and forth.

The inward and outward action of the correlated parts regulates thevolume capacity of electric current of condenser. qr'any operating meansmay be used instead 01 the handle lever.

We have described our preferred form and construction, but may deviatetherefrom and modify the same so long as said construction andmodification falls within the scope oi the present specification andclaims.

What we claim as new and our invention and desire to secure by LettersPatent 1. In a condenser, a base, plate carrying supports arranged inpairs upon said base and one of sa1d pairs movable as a unit toward oraway from the other pair, a lever pivoted to said base, and a linkconnecting said lever with said movable pair of supports.

2. In a condenser, a base having grooves therein,'a pair of supportsrelatively fixed to said base, a slide arranged for travel in saidgrooves toward or away from said supports, a pair or supports affixed tosaid slide, spaced plates carried by each of said pairs of supports andcapable of travel in the spaces between each other, a lever on saidbase, and a link connecting said lever with said slide carried supports.

8. In a condenser, a base having spaced pairs oi grooves thereinparallel to each other, slides having their ends engaged in said groovesand capable of moving toward or away from each other, supports arrangedin space: relation and extending outwardly from said slides, condenserplates arranged in spaced relation and carried by each 01'? said pairsof supports and capable of moving longitudinally of each other into thespaces between the plates of the respective supports, a lever pivoted ateach end of said base, and link connecting'cach lever with a post or"the nextadjacent pair.

in testimony whereof, we ai'iix our signatures at Cincinnati, Ohio, thislth day 01"- March, 1925.

nrnonr sonnnnnn. JESSE s. WENTWORTH.

